mod_deflate: Dramatic website speed increase with Apache compression on Ubuntu Linux
How to supercharge your mobile visitor's experience with mod_deflate, which tends to provide a 62% to 72% savings on bandwidth required to deliver each page.
Rails: TypeError: nil can't be coerced into Float
In Rails, whinny nil exceptions are a real pain. I like to use to_f when computing float values because nil.to_f is 0.0.